diff options
| author | Sridhar Samudrala <sri@us.ibm.com> | 2006-07-21 14:48:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-07-21 14:48:50 -0700 |
| commit | ad8fec1720e000ba2384de6408076a60fc92a981 (patch) | |
| tree | 52fd2f7af583b95db6db369c6b3ea3d6adc26d69 /net/sctp/sm_statefuns.c | |
| parent | cfdeef3282705a4b872d3559c4e7d2561251363c (diff) | |
[SCTP]: Verify all the paths to a peer via heartbeat before using them.
This patch implements Path Initialization procedure as described in
Sec 2.36 of RFC4460.
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_statefuns.c')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 9e58144f485..e8498dce533 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -846,6 +846,7 @@ static sctp_disposition_t sctp_sf_heartbeat(const struct sctp_endpoint *ep, hbinfo.param_hdr.length = htons(sizeof(sctp_sender_hb_info_t)); hbinfo.daddr = transport->ipaddr; hbinfo.sent_at = jiffies; + hbinfo.hb_nonce = transport->hb_nonce; /* Send a heartbeat to our peer. */ paylen = sizeof(sctp_sender_hb_info_t); @@ -1048,6 +1049,10 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const struct sctp_endpoint *ep, return SCTP_DISPOSITION_DISCARD; } + /* Validate the 64-bit random nonce. */ + if (hbinfo->hb_nonce != link->hb_nonce) + return SCTP_DISPOSITION_DISCARD; + max_interval = link->hbinterval + link->rto; /* Check if the timestamp looks valid. */ |